Question

question 40: complete the sentence: converting units requires the multiplication of the original value by one or more _________. a. conversion factors b. variables c. coefficients d. exponents question 41: scenario: a scientist needs to convert 2500 milliliters to liters for an experiment. which is the correct conversion? a. 2.5 l b. 25 l c. 0.25 l d. 250 l question 42: scenario: in a lab, a technician converts 5 kilometers to 5000 meters. true or false?

Explanation:

Step1: Recall unit - conversion concept

Converting units involves using conversion factors. For example, to convert between different length, volume, or mass units, we multiply by appropriate conversion factors. So for Question 40, the answer is conversion factors.

Step2: Convert milliliters to liters for Question 41

We know that 1 liter = 1000 milliliters. To convert 2500 milliliters to liters, we use the conversion factor $\frac{1L}{1000mL}$. So $2500mL\times\frac{1L}{1000mL}=2.5L$.

Step3: Convert kilometers to meters for Question 42

Since 1 kilometer = 1000 meters, to convert 5 kilometers to meters, we multiply by the conversion factor 1000. So $5km\times1000\frac{m}{km}=5000m$. The statement is True.

Answer:

Question 40: A. conversion factors
Question 41: A. 2.5 L
Question 42: True